{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "950478625",
    "entityType": "User",
    "nonce": "0x73af9a9df78b79cd16135f5ec1c0c0c18d5a06ba9cef5d2a5a8fba5972f034bb",
    "signature": "0xe573c8580d7da8613a63dc35286b222c0658b971c7cab4462b118052a8bcb410318eca5f2461db571e456e15967d0cb1e936d6c80f5bedc3bcf83bde45233ad31c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}